Weather & environment：練習題

Read the following text about a summer activity.

"Last weekend, my family went to the beach. The sun was shining brightly, and there wasn't a single cloud in the sky. However, the humidity was so high that we felt very sticky and uncomfortable even while sitting under the umbrella."

What does the word 'humidity' mean in this context?

Look at the weather chart for four different cities and answer the question.

City A: \(15^{\circ}C\), Foggy
City B: \(32^{\circ}C\), Thunderstorms
City C: \(2^{\circ}C\), Snowing
City D: \(24^{\circ}C\), Breezy

In which city would it be most dangerous to go hiking in the mountains today?

Read the following weather warning information.

"The Very Hot Weather Warning is in force. The Hong Kong Observatory reminds the public to stay hydrated and avoid prolonged exposure to sunlight to prevent heatstroke. People working outdoors should wear wide-brimmed hats and light-colored clothing."

What is the primary purpose of this warning?

What is the best word to describe the weather based on the sentence below?

The wind was blowing very hard, and many people's umbrellas were turned inside out.

Which of the following is the most effective way to help the environment by reducing waste in the school canteen?

Look at the weather forecast data for the week and answer the questions.

Monday: \(22^{\circ}C\) to \(26^{\circ}C\), Sunny
Tuesday: \(21^{\circ}C\) to \(24^{\circ}C\), Cloudy
Wednesday: \(18^{\circ}C\) to \(20^{\circ}C\), Heavy Rain

Part A: Which day has the largest temperature range (the difference between the high and low temperature)?
Part B: On which day should students remember to bring an umbrella?

Analyze the following Weather & environment scenario: A 'Very Hot Weather Warning' has been issued by the Hong Kong Observatory. Identify two groups of people who are most at risk during this time and suggest one specific action they should take to stay safe.

Read the following description of a Weather & environment phenomenon: 'This occurs when there is a sudden and heavy fall of rain in a short period, often leading to rising water levels in low-lying areas.' What is this phenomenon called, and what safety measure should residents in those areas take?

Study the following table regarding Hong Kong's air quality and weather, then answer the questions.

Air Quality Health Index (AQHI) Scale:
1-3: Low Risk (Safe for outdoor activities)
4-6: Moderate Risk (General public can continue outdoor activities)
7: High Risk (Reduce outdoor physical exertion)
8-10: Very High Risk (Avoid outdoor physical exertion)

Today's Record:
- 10:00 a.m.: AQHI 3, Sunny, \(28^{\circ}C\)
- 2:00 p.m.: AQHI 8, Hazy, \(32^{\circ}C\)
- 6:00 p.m.: AQHI 5, Windy, \(27^{\circ}C\)

Part A: At what time was it least safe for students to have a PE lesson outdoors? Explain why.
Part B: What was the temperature difference between the hottest and coolest times recorded?
Part C: What does the term "Hazy" suggest about the environment at 2:00 p.m.?